Experimental Analysis on the Fatigue LifeFor Inclined Butt WeldmentsExperimental Analysis on the Fatigue Life For Inclined Butt Weldments

• Main Authors: FONG CHAO FENG, 房晁鋒
• Other Authors: 任貽明
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/77571804834307077638

碩士 === 中華大學 === 機械與航太工程研究所 === 93 === The effect of the angle between the butt welding and the direction of cyclic loading on the fatigue life behavior of the weldments was experimentally analyzed in this study. Five inclined angles of the butt welding were considered in the experimental program. Local stress approach was employed in evaluating the fatigue life of weldments in the present study. The finite element method was useed to simulate the stress/strain behavior of the weldment and the locations for crack initiation were obtained by examining the von Mises stress results from the numerical analysis. Four fatigue life prediction models were utilized in the study to calculate the fatigue life of the welment by using the local stress/strain calculated from the finite element analysis. Both the predicted crack initiation locations and the predicted fatigue life were compared and discussed with the experimental results in the study.